Squirrels forget where they hide about half of their nuts.
698
A scorpion can hold its breath for up to 6 days.
19
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
The male seahorse carries babies and 'gives birth' to them instead of the female.
7